Projects per year
Abstract
The gyrotron has already demonstrated the capability of generating high-power coherent electromagnetic (EM) radiation at high frequencies and finds application in fusion plasma heating and magnetic resonance spectroscopy. In this article, we propose a W-band gyrotron, which uses a so-called multimode switching scheme to realize ultrabroadband frequency tuning capability, nearly covering about 70% of the W-band (75-110 GHz) range. The tuning strategy used to suppress mode competition and stabilize gun parameters in such an open-cavity multimode switching gyrotron is presented. Theoretical study shows that the multimode switching gyrotron can generate a frequency tuning range much wider than a conventional step-tuning gyrotron or a single-mode tuning gyrotron. In addition, another technology that uses a slot-assisted circuit to select only axis-symmetrical TE operating modes is presented. Using such a circuit, a tuning range of about 25 GHz in the W-band is obtainable. The proposed multimode switching gyrotron is a promising ultrabroadband source for millimeter-wave and terahertz-wave applications.
Original language | English |
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Article number | 8945210 |
Pages (from-to) | 659-666 |
Number of pages | 8 |
Journal | IEEE Transactions on Electron Devices |
Volume | 67 |
Issue number | 2 |
Early online date | 30 Dec 2019 |
DOIs | |
Publication status | Published - 29 Feb 2020 |
Keywords
- frequency tunable gyrotron
- W-band
- coherent electromagnetic (EM) radiation
- broadband tuning
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Dive into the research topics of 'Theoretical study of a W-band-covering frequency tunable gyrotron'. Together they form a unique fingerprint.Projects
- 1 Finished
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Terahertz High-Harmonic Gyrotron Oscillator By Using Metasurface Cylindrical Cavity (Newton Advanced Fellowship - Prof Chao-Hai Du)
Cross, A. (Principal Investigator) & Zhang, L. (Research Co-investigator)
28/03/18 → 27/09/22
Project: Research Fellowship